Henry a



To all whom it may concern:

HENRY A. LAUGHL I-N, OF PITTSBURG, PENNSYLVANIA.

Letters Patent No. 85,529, dated Jantwry 5, 1869.

IMPROVED "COLD-PIX PQR LIN'ING- IRON-CHILLS, MOU'LDS, PIC-FEEDS, 8m.

The Schedule referred to in these Letters Patent and making part of the same.

Be it known that I, HENRY A. LA UGHLIN, of Pittsburg, in the county of Allegheny, and State of Pennsylvania, have invented or discovered a certain new and useful Composition as a Gold-Fix, for Lining Iron-Chills, Moulds, Pig-Beds, 8m, into which molten metal is run from a blast-furnace; and that the following is a full, clear, and exact description of the same, and of the objects and purposes to be obtained by its Raw ores, in a pulverized state, have been heretofore-used in various ways in connection with the manufacture of iron. I lay no claim to any such process or use of raw ores, individually; but I have discov ered that a compound of pulverized raw ore and of salt can be used, (not generally, but specifically-,) in the chills,.moulds, or pig-beds, and very much improve'its quality for the subsequent working of the iron in a puddling or boiling-furnace; and

My invention relates to a compound of raw ore and salt, as a cold-fix}? for lining chills, moulds, pig-beds, 8m, preparatory to their receiving the molten metal from the blast-furnace.

To enable those skilled in the art to make and use my invention, I will proceed to describe the same, as follows: a

For the lining of a chill or mould, that will hold, say, one hundred pounds of iron, I take, about six pounds of chloride of sodium, or other salts of .soda,

and mix with it from six to ten pounds of pulverized ore, (raw iron-ore.) The salt gives to themixture a degree of dampness sufiicient to cause this composition working in the pnddling or boiling-furnace comparatively easyand expeditious. v

A portion of the cold-fix may becomethoronghly incorporated with the iron, and the portion that does not so become a part of the iron is worked out in the after-process or treatment. The quality'of the iron is improved by this cold-fix lining; and there is an after-saving in labor and fuel in the subsequent working of the metal in puddling or boiling-furnaces, and with a less percentage of loss than when the metal is cast in chills or moulds, without using the coldfix lining.

. Having thus fully described my invention,

What I claim therein as new, and desire to secure by Letters Patent, is-

A cold-fix composition for lining chills, moulds, or pig-beds, made of pulverized raw iron-ore and salt,

substantially in the manner, proportions, and for the purpose of receiving molten metal from a blast-furnace, and partially oxidizing the metal, as and for the purpose described. 7

Witnesses: HENRYA. LAUGHLIN.

A. B. S'roUGH'roN, EDMUND MAsson. 

